Question

State the functions of plant hormones. Name four different types of plant hormones and elaborate their functions.

Answer 1

Answer:

the four kinds of plant hormones are:

1.auxin

2.gibberellin

3.cytokinin and

4.ethylene

AUXIN: is a plant hormone which helps in apical growth is photosensitive and is present at the root tip and shoot tip usually the auxin present in root tip isn't photosensitive photosensitive

gibberellin : is a plant hormone which helps in in later growth as well as secondary and primary growth in a plant it also helps in the growth of the plant in unfavourable conditions. CYTOKININ: is a hormone which helps in repetitive divisions of cell also it supports literal division and growth more than the apical growth hence reducing the apical dominance

ETHYLIN :is a gaseous hormone and acts as a a growth inhibitor.

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Answer 2

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The plant hormones regulate many functions in plants, which are as follows:-

1. Germimation of seed or breaking the dormancy of seeds.

2. Growth of roots, stem and leaves.

3. Flowering of plants.

4. Ripening of fruits.

5. Movement of stomata in leaves.

6. Phototropism, geotropism chemotropism and nastic movement.

Four different types of plant hormones are auxins, gibberellins, cytokinins, and abscisic acid.